Pizza Calculator

How to use the Pizza Calculator

1. 1Enter guests, slices each, slices per pizza and the price.
2. 2Pick the units or options from the menus if the pizzas for a party tool offers them.
3. 3Read the pizzas for a party in the large result box.
4. 4Look at the extra rows for related figures.
5. 5Press Copy result to keep the answer.

When you need the pizzas for a party

Hosts, teachers and office organisers use it for parties, school events and team lunches.

Plan 2 to 3 slices for adults and 1 to 2 for children. If a mix of tastes is likely, round up and order a variety.

How the pizzas for a party is worked out

Pizzas = guests × slices per person ÷ slices per pizza, rounded up. Leftover slices = pizzas × slices per pizza − slices needed. For 12 guests eating 3 slices each, 36 slices are needed. With 8 slices per pizza that is 4.5, so order 5 pizzas, leaving 4 slices.

Every answer on this page comes from that one rule, so you can check any result by hand with a calculator. The figures shown underneath, such as other units, are conversions of the same answer.

• Rounds up for you
• Leftover slices
• Total cost

Mistakes to avoid with pizzas for a party

Check how many slices the shop cuts a large pizza into, as it differs between 6 and 12. Add extra for hungry teenagers and a small margin for late guests.

On phone and computer

On a phone, type into the boxes one after another and read the pizzas for a party underneath; Copy result puts it on the clipboard for a message or a note. On a computer the inputs sit on the left and the answer on the right, so you can change one figure and watch the pizzas for a party move. The pizza calculator works the same on both.

Checking your pizzas for a party by hand

A good habit is to test the pizza calculator with a case you already know. For 12 guests eating 3 slices each, 36 slices are needed. With 8 slices per pizza that is 4.5, so order 5 pizzas, leaving 4 slices.

If your own figures give a surprising answer, repeat the working yourself: Pizzas = guests × slices per person ÷ slices per pizza, rounded up. Leftover slices = pizzas × slices per pizza − slices needed. Small differences usually come from rounding, from mixing units, or from a typing slip in one of the inputs. Working out the pizzas is just one part of the party. Compare sizes with the Pizza Size Comparison Calculator, split the bill with the Split the Bill Calculator, and add a tip with the Tip Calculator.

Features

• Check slices per pizza
• Order a little extra
• Mix flavours
• Clear messages when the pizzas for a party inputs make no sense
• Copy the result with one tap
• Private: nothing is uploaded

Frequently asked questions